No way to fully shut down Kamon 1.0

[ruippeixotog]

There should be a way to completely shut down Kamon programatically, making the JVM terminate normally without recurring to explicit System.exit calls. With Kamon 1.0, unfortunately, I can't seem to do this:

object Main extends App {
  Kamon.loadReportersFromConfig() // this may even be an empty list of reporters
  Kamon.stopAllReporters()
  // the JVM should terminate after this
}

It seems that due to the registryExecutionContext inside ReporterRegistry, the JVM keeps active threads that prevent the JVM shutdown. We should be able to shut down the registryExecutionContext either by a Kamon.stop() method like before or by stopAllReporters().

[ivantopo]

hello @ruippeixotog, thanks for reporting this! We will take a look it asap :)

[n1ko-w1ll]

oh yes, that's a show stopper for us. Since adding the Kamon dependency, there are more and more situations in which our application is not able to shutdown correctly. This is even more a problem because this is our way to reload the application if the configuration in Consul changes... application exits and is restarted by docker. Now the application tries to stop but keeps hanging in an undefined state.